The light inside occasionally flickers every hour or so. Always has. I'm not sure if it's a feature or a bug.
https://www.amazon.com/Starcraft-Protoss-Pylon-Desktop-Station/dp/B0184DMDN6
2 USB ports: 2.1 Amps, split between the two ports
Includes pylon power station, 100-240v ~50-60Hz .5A AC adapter, and a micro-USB